Dustin, in the chamber there are two baffle plates on either side of the main inlet of the muffler. The baffles have restrictor holes that by my calculations create enough backpressure for fuel flow yet allow free flowing exhaust for low end power and it seemed top end was hell of alot faster, the engine did rev quicker too. I want to test it on new engine. More testing is needed. Packaging seems to work very well. I also, regained the proper space for the upper shock mounts to use ALL mounting holes!!! Big bonus!!!

Any other suggestions/comments guys??..